System for compression therapy

ABSTRACT

A system for compression therapy comprises a patient-support apparatus and a compression sleeve assembly that is coupleable to the patient-support apparatus. In some embodiments, the patient-support apparatus comprises a hospital bed; and in other embodiments, the patient-support apparatus comprises a mattress for a bed. The compression sleeve assembly comprises a sleeve that couples to a patient&#39;s limb and that inflates to promote blood flow. The compression sleeve assembly also comprises a conduit and a compression module that is operable to inflate the sleeve through the conduit. The conduit may be routed, at least in part, through the associated patient-support apparatus. The compression module may be situated, at least in part, in a cavity of the associated patient-support apparatus. A compression module that couples to an architectural structure, such as a headwall unit, is also disclosed.

RELATED APPLICATION

The present application claims priority to U.S. Provisional PatentApplication Ser. No. 60/462,130, filed Apr. 11, 2003, the completedisclosure of which is hereby expressly incorporated by reference.

BACKGROUND OF THE INVENTION

The present disclosure relates to a system for compression therapy, andparticularly to a system for applying compression to one or more of aperson's limbs to promote blood flow. More particularly, the presentdisclosure relates to a compression therapy system having inflatablesleeves that couple to one or more of a person's limbs and that areinflated and deflated to promote blood flow.

Sleeves that couple to a person's limbs and that are inflated to promoteblood flow are well known. Such sleeves typically have one or more airbladders and associated hoses or tubes leading from the bladder(s) to apump unit. Conventional pump units are usually stand-alone units thathouse a pump or other suitable pressure source along with valves,manifolds, pressure sensors and control circuitry that cooperate withthe pump to inflate and deflate the associated bladder(s) according to acontrol algorithm. These pump units are oftentimes placed on a cabinetor a stand next to a bed or other piece of furniture on which a personrests. In recent times, portable pump units that may be carried by aperson during compression therapy have been developed. See, for example,U.S. Pat. Nos. 6,478,757 and 6,447,467, each of which is entitled Devicefor Pressurizing Limbs. See, also, U.S. Patent Application PublicationNo. 20020042583A1, which is entitled Automatic Portable PneumaticCompression System.

SUMMARY OF THE INVENTION

According to the present invention, a system for applying compressiontherapy to patient's limb is provided and has one or more of thefollowing features or combinations thereof. The system comprises acompression module and a compression sleeve adapted to couple to apatient's limb. The compression module may couple to a patient-supportapparatus. The patient-support apparatus may have a module-receivingcavity that receives at least a portion of the compression module. Thesystem may have a conduit extending between the compression module andthe compression sleeve. A portion of the conduit may be routed through aportion of the patient-support apparatus. The patient-support apparatusmay comprise a bed. The patient-support apparatus may comprise amattress. The module-receiving cavity may be provided in a siderail ofthe bed, a foot board of the bed, a deck section of the bed, or in themattress. The compression module may couple to a headwall unit. Theheadwall unit may have a module-receiving cavity that receives at leasta portion of the compression module. The compression module may have anelectric circuit that communicates with a network of a healthcarefacility. The electric circuit of the compression module may communicatewith the network via an electrical control system of the bed. Theelectric circuit of the compression module may couple to the networkwhen the compression module is coupled to the headwall.

In some illustrative embodiments, the compression module carries apressure generator that operates to inflate the compression sleevethrough the conduit. In other illustrative embodiments, the compressionmodule couples to an external pressure source and a valve of thecompression module is operated to control the application of pressurefrom the external pressure source to the compression sleeve. In anotherillustrative embodiment, the compression module carries a pressuregenerator and also is coupleable to an external pressure source. In thislatter embodiment, a control valve may be operated to select whether thecompression sleeve is inflated by the pressure generator carried by thecompression module or by the external pressure source.

According to an aspect of this disclosure, data is downloaded from thecompression module to one or more computer devices of the network and/orsoftware revisions are uploaded to the compression module from one ormore computer devices of the network. In some embodiments, thedownloading and/or uploading takes place while the compression module isin use and is coupled to the network. In other embodiments, thedownloading and/or uploading takes place at a remote location at a latertime after use. In some embodiments, a battery of the compression moduleis recharged while the compression module is coupled to thepatient-support apparatus or to the headwall unit. In other embodiments,the compression module is recharged when coupled to a separaterecharging apparatus. In one illustrative embodiment, the compressionmodule receives power from a power cord that plugs into a lighter socketof an automotive vehicle.

According to another aspect of this disclosure, a housing of thecompression module is configured for portability. For example, differenttypes of handles for carrying the compression module and different typesof attachment mechanisms for coupling the compression module to hospitalequipment to be transported therewith are disclosed herein. According toa further aspect of this disclosure, different types of garments forcarrying the compression module are provided. In some embodiments, thecompression sleeve is the garment which carries the compression module.

Additional features will become apparent to those skilled in the artupon consideration of the following detailed description of illustrativeembodiments exemplifying the best mode of carrying out various systemsfor compression therapy as presently perceived.

BRIEF DESCRIPTION OF THE DRAWINGS

The detailed description particularly refers to the accompanyingfigures, in which:

FIG. 1 is a perspective view of a compression therapy system accordingto this disclosure showing a hospital bed, a footboard of the hospitalbed exploded away from a patient-support deck of the hospital bed, acompression module exploded away from a module-receiving cavity formedin the footboard, and a pair of compression sleeves exploded away fromthe footboard;

FIG. 2 is a perspective view of an alternative compression therapysystem showing a hospital bed, a siderail exploded away from the apatient-support deck of the hospital bed, a compression module explodedaway from a module-receiving cavity formed in the side rail, and a pairof diagrammatic compression sleeves exploded away from the siderail;

FIG. 3 is a perspective view of another alternative compression therapysystem showing a hospital bed situated near a headwall unit, acompression module exploded away from the headwall unit, the compressionmodule being configured for insertion into a module-receiving cavity ofthe headwall unit, and a pair of conduits (in phantom) being routedthrough the headwall unit from the module-receiving cavity to respectiveconduit couplers that are accessible on a portion of the headwall unitadjacent an end of the hospital bed;

FIG. 4 is a perspective of the footboard of the compression therapysystem of FIG. 1, showing a pair of conduit couplers accessible on aback wall of the footboard that faces toward a patient when thefootboard is coupled to the hospital bed, a pair of conduits (inphantom) extending from the conduit couplers to the module-receivingcavity (in phantom), an electrical coupler (in phantom) situated at thebottom of the footboard, and an electrical line extending from theelectrical coupler to the module-receiving cavity;

FIG. 5 is a side elevation view of the siderail of the compressiontherapy system of FIG. 2, showing a pair of conduit couplers accessibleon a side wall of the siderail that faces toward a patient, a pair ofconduits (in phantom) extending from the conduit couplers to themodule-receiving cavity (in phantom), and an electrical line extendingfrom the module-receiving cavity out of the siderail;

FIG. 6 is a perspective view of a further alternative compressiontherapy system showing a mattress having a module-receiving cavity at ahead end thereof, a compression module configured for insertion into themodule-receiving cavity, a pair of conduit couplers accessible onopposite sides of the mattress near a foot end of the mattress, and apair of conduits (in phantom) extending from the module-receiving cavityto respective conduit couplers;

FIG. 7 is a perspective view of another alternative compression therapysystem, similar to the system of FIG. 6, but having a module-receivingcavity in one of the sides near the head of the mattress;

FIG. 8 is a perspective view of an alternative compression moduleshowing the module having a substantially rectangular, box-shapedhousing, a conduit coupler at one end of the housing, and a handle at anopposite end of the housing;

FIG. 9 is a perspective view of an alternative hospital bed having apatient-support deck with a pivotable head deck section that includes amodule-receiving cavity configured to receive therein the compressionmodule of FIG. 8;

FIG. 10 is a fragmentary perspective view showing a caregiver insertingthe compression module of FIG. 8 part way into the module-receivingcavity included in the head deck section of the hospital bed of FIG. 9;

FIG. 11 is a block diagram showing a bed having a conduit routedtherethrough, a compression module that is coupleable to the bed, and acompression sleeve that is selectively coupleable to the bed and to thecompression module;

FIG. 12 is a block diagram showing a bed having an electrical controlsystem and a conduit routed therethrough, a compression module that iscoupleable to the bed, an additional conduit that is coupleable to thecompression module, a compression sleeve that is selectively coupleableto the bed and to the additional conduit, and an electric circuit of thecompression module being coupled to an external power source and to anetwork of computer devices via the electrical control system of thebed;

FIG. 13 is a block diagram showing a bed having an electrical controlsystem and a conduit routed therethrough, a compression module that iscoupleable to the bed and to an external pressure source, a compressionsleeve that is selectively coupleable to the bed and to the compressionmodule, and an electric circuit of the compression module being coupledto an external power source and to a network of computer devices via theelectrical control system of the bed;

FIG. 14 is a block diagram showing a bed having a conduit routedtherethrough, a compression module that is coupleable to the bed and toa headwall, a compression sleeve that is selectively coupleable to thebed and to the compression module, and the headwall unit having outletsfor connecting the compression module to an external power source, tothe network, and to an external pressure source;

FIG. 15 is a perspective view of a supply-storage station showing aplurality of compression modules coupled communicatively to a computerto download data thereto or to receive data, such as software upgrades,therefrom;

FIG. 16 is a perspective view of a module-recharging apparatus showing avertical recharging stick and three module-receiving cradles coupled tothe recharging stick;

FIG. 17 is a perspective view showing of one of the compression moduleswhich is configured to receive power from a power cord that plugs into alighter socket of an automotive vehicle;

FIG. 18 is a perspective view of an alternative compression modulehaving a housing with a carrying handle molded integrally therewith;

FIG. 19 is a perspective view of another alternative compression modulehaving a pivotable carrying handle coupled to a housing of thecompression module;

FIG. 20 is a perspective view of a further alternative compressionmodule having a housing with loop-receiving eyelets molded integrallytherewith and showing a pair of flexible loops that are coupled torespective loop-receiving eyelets;

FIG. 21 is a perspective of yet another alternative compression moduleshowing a belt clip molded integrally with a housing of the compressionmodule;

FIG. 22 is a perspective view of still another alternative compressionmodule showing a clip that is molded integrally with a housing of thecompression module and that is configured to couple the compressionmodule to a horizontally extending tube;

FIG. 23 is a top plan view of a yet a further alternative compressionmodule having a pair of flanges and a knob that are configured to couplethe compression module to a vertically extending pole;

FIG. 24 is a perspective view showing a compression module coupled to anarmrest of a wheelchair to be transported therewith;

FIG. 25 is a perspective view showing a compression module coupled to ahorizontal tube of a walker to be transported therewith;

FIG. 26 is a perspective view showing a compression module coupled to avertical IV pole extending upwardly from a wheeled base;

FIG. 27 is perspective view showing a person wearing a shoulder harnesshaving a pouch in which a first compression module is carried andwearing a fanny pack having a pouch in which a second compression moduleis carried;

FIG. 28 is a perspective view showing a person wearing a vest having apocket in which a compression module is carried; and

FIG. 29 is a perspective view showing a compression sleeve coupled to acalf of a person and showing the compression sleeve having a pocket inwhich a compression module for inflating the compression sleeve iscarried.

DETAILED DESCRIPTION OF THE DRAWINGS

One embodiment of a compression therapy system 30 in accordance withthis disclosure comprises a patient-support apparatus 32, a compressionmodule 34 that detachably couples to apparatus 32, and one or morecompression sleeve assemblies 36 that detachably couple to apparatus 32as shown in FIG. 1. Illustrative apparatus 32 comprises a hospital bed(sometimes referred to herein as “bed 32”) having a frame 38, apatient-support deck 40 coupled to frame 38, a patient-support surfaceor mattress 42 supported by deck 40, a set of siderails 44 coupled todeck 40, and a footboard 46 that detachably couples to deck 40.Apparatus 32 has a head end 48 and a foot end 50 as shown in FIG. 1.Footboard 46 couples to deck 40 so as to extend upwardly from deck 40adjacent to foot end 50 of bed 32.

One of illustrative compression sleeve assemblies 36 comprises a sleeve52 that is sized and configured for attachment to a patient's calf and aconduit 54 that extends from sleeve 52 as shown in FIG. 1. Conduit 54includes a flexible ribbon 56 of three tubes 58 and a conduit coupler 60mounted to an end of ribbon 56 that is distal from sleeve 52. Sleeve 52is subdivided into first, second, and third inflatable portions 62, 64,66, each of which is associated with a respective tube 58 of ribbon 56.Coupler 60 has three ports 68, each of which communicates pneumaticallywith a respective tube 58. The other of illustrative compression sleeveassemblies 36 comprises a sleeve 70 that is sized and configured forattachment to a patient's foot and a conduit 72 that extends from sleeve70 as also shown in FIG. 1. Conduit 72 includes a single, flexible tube74 and a conduit coupler 76 mounted to an end of tube 74 that is distalfrom sleeve 70. Sleeve 70 has one inflatable portion 78 which isassociated with tube 74. Coupler 76 has three ports 80, two of which are“dummy” ports and one of which communicates pneumatically with tube 74.

Sleeve 52 wraps around and encompasses a patient's calf so that firstportion 62 is situated slightly above the patient's ankle and so thatportion 66 is situated slightly below the patient's knee. Suitablefasteners 82, such as hook strips that mate with companion loop stripsor with an outer layer of material of sleeve 52, are provided forholding sleeve 52 on the patient's calf. Inflatable portion 78 of sleeve70 wraps around a patient's foot so as to cover the arch, the heel, andthe top of the patient's foot. Sleeve 70 also has a strap 84 that istethered to portion 78 and that wraps around the patient's ankle.Suitable fasteners 86, such as hook strips that mate with companion loopstrips or with an outer layer of material of sleeve 70, are provided onportion 78 and on strap 84 for holding sleeve 70 on the patient's foot.

It should be appreciated that assemblies 36 having sleeves 52, 70 aremerely a couple of examples of the types of compression sleeveassemblies that may be included in system 30 and therefore, compressionsleeves of all shapes, sizes, and types, including sleeves that coversubstantially all of a patient's limb and including sleeves having anynumber of inflatable portions, are within the scope of this disclosurefor use in system 30, as are sleeves that slip onto a patient's limbrather than wrap around the patient's limb. Furthermore, in someembodiments, couplers 60, 76 may be omitted such that distal ends ofconduits or tubes 58, 74 couple to associated sleeve ports directly.

Illustrative compression module 34 and sleeve assemblies 36 are eachcoupleable to footboard 46. A front panel or wall 88 of footboard 46 isformed to include a module-receiving cavity 90, shown best in FIG. 1, inwhich compression module 34 is received when module 34 is coupled tofootboard 46. Wall 88 may be formed, such as by molding, with cavity 90therein or, alternatively, wall 88 may have a substantially planarportion with an opening and a separate piece or pieces that attach tothe planar portion to define cavity 90 adjacent the opening.

In the illustrative embodiment, cavity 90 is sized to receive the entiremodule 34 therein. In alternative embodiments, a smaller cavity isprovided in footboard 46 and only a portion of module 34 is received inthis alternative cavity. In still further embodiments, no cavity isprovided in footboard 46 and module 34 couples to footboard 46 via othermechanisms, such as hooks, posts, straps, brackets, or the like. In someembodiments having a cavity, such as cavity 90, formed in footboard 34,one or more retention mechanisms (not shown), such as latches,retractable pins, clips, detents, straps, bands, arms, doors, or thelike, are provided to retain module 34 in the cavity.

A pair of conduit couplers 92 are mounted or otherwise supported withrespect to a back panel or wall 94 of footboard 46 as shown in FIG. 4.In addition, an electrical connector 96 is coupled to or otherwisesupported with respect to a bottom 98 of footboard 46. When footboard 46is coupled to deck 40, connector 96 mates with an associated electricalconnector 99, shown in FIG. 1, that is coupled to deck 40.Illustratively, footboard 46 has a pair of sockets 100, shown in FIG. 4(in phantom), and bed 32 has a pair of posts 110 that extend upwardlyfrom deck 40 as shown in FIG. 1. Posts 110 are received in sockets 100to couple footboard 46 to bed 32. As footboard 46 moves downwardlytoward the foot end 50 of deck 40 during coupling of footboard 46 to bed32, the upper ends of posts 110 enter sockets 100 to properly alignconnector 96 with connector 99 prior to the mating of connectors 96, 99.

Connector 99 is coupled via suitable electrical lines or conductors (notshown) to the electrical system of bed 32. Connector 96 is coupled viasuitable electrical lines or conductors 112, shown in FIG. 4 (inphantom) to an electrical connector 114 that is accessible throughcavity 90 as shown in FIG. 1. Thus, lines 112 which interconnectconnectors 96, 114 are routed through an interior region which isdefined between front panel 88 and back panel 94 of footboard 46.Conduit couplers 92 are coupled via respective pneumatic lines orconduits 116 to associated pneumatic couplers 118 which are accessiblethrough cavity 90. Lines 116 which connect couplers 92 and respectivecouplers 118 are also routed through the interior region of footboard46. In the illustrative embodiment, couplers 92 each have three ports120 which mate with the ports 68, 80 of whichever of couplers 60, 76 aremated therewith. Couplers 60, 76 are selectively coupleable to either ofcouplers 92.

Module 34 has an electrical connector and a pair of pneumatic couplersthat mate with connector 114 and couplers 118 when module 34 is receivedin cavity 90. In the illustrative embodiment, connector 114 and couplers118 are associated with an upwardly facing surface that underlies cavity90. In alternative embodiments, connector 114 and/or couplers 118 may beassociated with any of the side surfaces, top surface, and/or backsurface that cooperate with the upwardly facing surface to define cavity90 in footboard 46. In these alternative embodiments, the associatedelectrical connector and pneumatic couplers of module 34 are located inthe appropriate locations on module 34 so as to mate with the connector114 and couplers 118 that are situated in the alternative locations onfootboard 46.

Module 34 has a housing 122 with an interior region in which is situatedelectrical and pneumatic circuitry which operates to inflate and deflatesleeves 64, 78 in accordance with one or more control algorithms. Userinputs 124 are provided on the front of housing 122 and are engaged by auser to input operating parameters into the circuitry of module 34. Suchoperating parameters may include inflation sequence, maximum/minimuminflation pressure(s), dwell time(s) after inflation, and the amount oftime between inflations. One or more displays, such as an LED or adisplay screen, may be included in module 34 to communicate variousdata, such as operating conditions and alarm conditions, to the user.When module 34 is received in cavity 90, electrical power is providedthrough connectors 96, 99, 114 and lines 112 to module 34 from theelectrical system of bed 32, which receives power either from a standardpower outlet or from an on-board battery. In addition, data may becommunicated between the circuitry of module 34 and the circuitry of bed32 through connectors 96, 99, 114 and lines 112.

When module 34 is coupled to foot board 46 of bed 32 and when sleeveassemblies 36 are coupled to foot board 46 of bed 32, module 34 operatesto inflate and deflate sleeves 52, 70 so as to apply compression therapyto one or more of the limbs of the patient resting on bed 32. Module 34has its own battery that provides electrical power to operate theelectrical and pneumatic circuitry thereof when module 34 isdisconnected from foot board 46. However, because the circuitry ofmodule 34 is provided with electrical power via bed 32 when module 34 isreceived in cavity 90 of foot board 46, the battery power of module 34is conserved. In some embodiments, the battery of module 34 is rechargedwhile module 34 is coupled to foot board 46.

Siderails 44 of bed 32 have various user inputs for controllingfunctions of bed 32. For example, the siderails 44 nearer the foot endof bed 32 have a set of caregiver control buttons 126 that are used bycaregivers to articulate various sections of deck 40 and that are usedby caregivers to raise, lower, and tilt deck 40 relative to a base 41 ofbed 32. These same siderails 44 have a set of patient control buttons127 that are accessible to the patient to articulate various sections ofdeck 40. The caregiver control buttons 126 may include buttons forlocking out the patient control buttons 127 so that sections of deck 40do not articulate in response to the patient pressing buttons 127.Illustratively, one of siderails 44 also has a display unit 128 with adisplay screen 130 and a set of buttons 131 that are used to scrollthrough and select various control options appearing on screen 130.

When module 34 is coupled to footboard 46 of bed 32, one or more ofbuttons 126, 131 may be used to enter operating parameters into module34. In addition, data relating to operating parameters and alarmconditions may be displayed on screen 130, or otherwise retrieved, whenmodule 34 is coupled to foot board. Thus, commands entered on buttons126, 131 relating to the operation of module 34 are communicated to thecircuitry of module 34 through the electrical control system of bed 32.Similarly, data sensed or otherwise generated by module 34 may becommunicated through the electrical control system of bed 32 to displayunit 128 for display on screen 130.

When the patient resting on bed 32 needs to exit bed 32, such as to goto the bathroom or to undergo physical therapy or other medicaltreatments or procedures, module 34 and couplers 60, 76 may be decoupledfrom foot board 46 and then couplers 60, 76 may be coupled directly tothe pneumatic couplers of module 34 so that compression therapy cancontinue while the patient is away from bed 32. The battery of module 34provides power to the circuitry of module 34 to inflate and deflatesleeves 52, 70 while the patient is out of bed 32. Illustratively,module 34 is small and lightweight and can be carried by the patientwhile-the patient is ambulatory. Suitable belts, straps, harnesses,vests, or the like may be provided for the patient to carry module 34.

Referring now to FIG. 2, an alternative compression therapy system 140comprises a bed 132 having a siderail 144 to which module 34 and sleeveassemblies 36 are each coupleable. Bed 132 is similar to bed 32 andtherefore, like reference numerals are used to denote portions of bed132 that are substantially the same as like portions of bed 32. Siderail144 has a front panel or wall 188 that is formed to include amodule-receiving cavity 190 in which compression module 34 is receivedwhen module 34 is coupled to siderail 144. Wall 188 may be formed, suchas by molding, with cavity 190 therein or, alternatively, wall 188 mayhave a substantially planar portion with an opening and a separate pieceor pieces that attach to the planar portion to define cavity 190adjacent the opening.

In the illustrative embodiment, cavity 190 is sized to receive theentire module 34 therein. In alternative embodiments, a smaller cavityis provided in siderail 144 and only a portion of module 34 is receivedin this alternative cavity. In still further embodiments, no cavity isprovided in siderail 144 and module 34 couples to siderail 144 via othermechanisms, such as hooks, posts, straps, brackets, or the like. As wasthe case with cavity 90 of foot board 46 of bed 32, one or moreretention mechanisms (not shown), such as latches, retractable pins,clips, detents, straps, bands, arms, doors, or the like, may be providedto retain module 34 in cavity 190 of siderail 144 of bed 132. Bed 132has a foot board 146 without any module-receiving cavity formed therein.In alternative embodiments, each of the footboard and one or moresiderails of a bed may have module-receiving cavities provided thereinfor receiving module 34.

A pair of conduit couplers 192 is mounted or otherwise supported withrespect to a back panel or wall 194 of siderail 144 as shown in FIG. 5.Couplers 192 have ports 120 as was the case with couplers 92 associatedwith footboard 46. Either of compression sleeve assemblies 36 arecoupleable to either of couplers 192 associated with siderail 144.Compression sleeve assembly 36 having sleeve 52 is showndiagrammatically in FIG. 2. An alternative compression sleeve assembly36 having a sleeve 152 is also shown diagrammatically in FIG. 2.Associated with sleeve 152 are conduits 155 forming a ribbon 157 havingtwo tubes 159 which extend from sleeve 152 to a conduit coupler 161having ports 169. The two tubes 159 suggests that sleeve 152 has twoinflatable sections. Of course, sleeves having any number of inflatablesections are contemplated by this disclosure. Coupler 161 is alsocoupleable to couplers 192 of siderail 144 and to couplers 92 of footboard 46 of bed 32. Two of ports 169 of coupler 161 are in pneumaticcommunication with respective tubes 159 and one of ports 169 is a“dummy” port.

An electrical connector 154 and a pair of pneumatic couplers 158 areaccessible in cavity 190 of siderail 144 as shown in FIGS. 2 and 5.Couplers 158 are coupled to respective couplers 192 by respectivepneumatic lines 150 that are routed through an interior region ofsiderail 144 which is defined between walls 188, 194 of siderail 144. Amechanism 148 is provided for pivotably coupling siderail 144 to deck 40of bed 132 so that siderail 144 is movable between a raised, useposition and a lowered, storage position. Mechanism 148 comprises an arm160 having an interior region 162 as shown in FIG. 5. An electrical line164 extends from connector 154 and is routed to the electrical controlsystem of bed 132 through interior region 162 of arm 160 and through anopening 166 formed in deck 40.

Module 34 has an electrical connector and a pair of pneumatic couplersas mentioned above. The electrical connector and pneumatic couplers ofmodule 34 mate with connector 154 and couplers 158, respectively, whenmodule 34 is received in cavity 190 of siderail 144. In the illustrativeembodiment, connector 154 and couplers 158 are associated with anupwardly facing surface of siderail 144 that underlies cavity 190. Inalternative embodiments, connector 154 and/or couplers 158 may beassociated with any of the side surfaces, top surface, and/or backsurface that cooperate with the upwardly facing surface to define cavity190 in siderail 144. In these alternative embodiments, the associatedelectrical connector and pneumatic couplers of module 34 are located inthe appropriate locations on module 34 so as to mate with the connector154 and couplers 158 that are situated in the alternative locations onsiderail 144.

When module 34 is received in cavity 190, electrical power is providedthrough connector 154 and line 164 to module 34 from the electricalsystem of bed 32, which receives power either from a standard poweroutlet or from an on-board battery. In addition, data may becommunicated between the circuitry of module 34 and the circuitry of bed32 through connector 154 and line 164. Any one or more of siderails 44,144 of bed 132 may have various user inputs for controlling functions ofbed 32. For example, any of siderails 44, 144 of bed 132 may havecaregiver control buttons 126 and/or patient control buttons 127 similarto those of bed 32. In addition, any one or more of siderails 44, 144 ofbed 132 may have a display unit (not shown) with associated screen anduser inputs similar to display unit 128 of bed 32. When module 34 iscoupled to siderail 144 of bed 132, one or more of buttons 126 and/orthe user inputs of any associated display unit may be used to enteroperating parameters into module 34. In addition, data relating tooperating parameters and alarm conditions may be displayed on the screenof any associated display unit, or otherwise retrieved, when module 34is coupled to siderail 144. Such commands and data may be communicatedthrough the electrical control system of bed 132 as was the case withbed 32.

When module 34 is coupled to siderail 144 of bed 132 and when sleeveassemblies 36 are coupled to siderail 144 of bed 132, module 34 operatesto inflate and deflate sleeves 52, 70, 152, as the case may be, so as toapply compression therapy to one or more of the limbs of the patientresting on bed 132. The battery of module 34 may be recharged whilemodule 34 is coupled to siderail 144. When the patient resting on bed 32needs to exit bed 32, module 34 and couplers 60, 76, 161, as the casemay be, are decoupled from siderail 144 and then couplers 60, 76, 161,as the case may be, are coupled directly to the pneumatic couplers ofmodule 34 so that compression therapy can continue while the patient isaway from bed 32. The battery of module 34 provides power to thecircuitry of module 34 to inflate and deflate sleeves 52, 70, 152, asthe case maybe, while the patient is out of bed 32.

Referring now to FIG. 3, an alternative compression therapy system 230comprises a headwall unit 200 that is coupled to a wall 202 of ahealthcare facility and that has a cavity 290 which is configured forreceiving module 34. Illustrative headwall unit 200 has a bed locatorportion 210 and a main portion 212 coupled to portion 210. Beds,stretchers, or other patient support devices, such as an illustrativebed 232 may be positioned adjacent portion 210 of headwall unit 200 asshown in FIG. 3. Bed 232 is similar to beds 32, 132 and therefore, likereference numerals are used to denote portion of bed 232 that aresubstantially similar to like portions of beds 32, 132.

Headwall unit 200 has a plurality of electrical power outlets 214 fromwhich electrical power is available, a plurality of data ports oroutlets 216 which are coupled to a computer network of the healthcarefacility, and a plurality of gas service outlets 218 which are coupledto a medical gas system of the healthcare facility. Illustrativeheadwall unit 200 also has an intercom or nurse call module 228 which isconfigured for communication with other such modules in other rooms andwith a master nurse station of the healthcare facility. Various types ofmedical gas services, such as oxygen, nitrogen, carbon dioxide, nitrousoxide, medical air, and medical suction are available via respectiveones of outlets 218. Thus, medical equipment (not shown) may plug intooutlets 214 to receive power, may couple to one or more of outlets 218to receive gas or suction, and may couple to ports 216 to communicatewith other computer devices of the computer network of the healthcarefacility.

Portion 212 of headwall unit 200 has a front panel or wall 220 in whichthe module-receiving cavity 290 is provided. For example, wall 220 maybe formed, such as by molding, with cavity 290 therein or,alternatively, wall 220 may have a substantially planar portion with anopening and a separate piece or pieces that attach to the planar portionto define cavity 290 adjacent the opening. In alternative embodiments,cavity 290 may be provided in a side wall 222 or a top wall 224 or anyother portion of headwall unit 200. In the illustrative embodiment,cavity 290 is sized to receive the entire module 34 therein. Inalternative embodiments, a smaller cavity is provided in unit 200 andonly a portion of module 34 is received in this alternative cavity. Instill further embodiments, no cavity is provided in unit 200 and module34 couples to unit 200 via other mechanisms, such as hooks, posts,straps, brackets, or the like. As was the case with cavity 90 of footboard 46 of bed 32 and with cavity 190 of siderail 144 of bed 132, oneor more retention mechanisms (not shown), such as latches, retractablepins, clips, detents, straps, bands, arms, doors, or the like, may beprovided to retain module 34 in cavity 290 of unit 200.

A pair of conduit couplers 292 is mounted or otherwise supported withrespect to a front panel or wall 226 of bed locator portion 210 of unit200 as shown in FIG. 3. Couplers 292 have ports (not shown) that aresubstantially similar to ports 120 of couplers 92, 192 associated withfootboard 46 and siderail 144, respectively. Each of the above-describedcompression sleeve assemblies 36 is coupleable to either of couplers 292associated with unit 200. In some embodiments, such as the illustrativeembodiment having head end 48 of bed 232 adjacent headwall unit 200,conduit extenders are provided to interconnect couplers 292 withcouplers 60, 76, 161, as the case may be, of sleeve assemblies 36. Ifbed 232 is positioned with foot end 50 adjacent headwall unit 200, thenthe conduit extenders may not be needed.

An electrical connector 254 and a pair of pneumatic couplers 258 areaccessible in cavity 290 of headwall unit 200 as shown in FIG. 3.Couplers 258 are coupled to respective couplers 292 by respectivepneumatic lines 250 that are routed through an interior region of unit200. The interior region of illustrative unit 200 is defined behindwalls 220, 226 and beneath wall 224. An electrical line (not shown)extends from connector 254 and couples to power lines and/or computernetwork lines of the healthcare facility. The electrical connector andpneumatic couplers of module 34 mate with connector 254 and couplers258, respectively, when module 34 is received in cavity 290 of unit 200.In the illustrative embodiment, connector 254 and couplers 258 areassociated with an upwardly facing surface of portion 212 that underliescavity 290. In alternative embodiments, connector 254 and/or couplers258 may be associated with any of the side surfaces, top surface, and/orback surface that cooperate with the upwardly facing surface to definecavity 290 in portion 212 of unit 200. In these alternative embodiments,the associated electrical connector and pneumatic couplers of module 34are located in the appropriate locations on module 34 so as to mate withthe connector 254 and couplers 258 that are situated in the alternativelocations within cavity 290.

When module 34 is received in cavity 290, electrical power is providedto module 34 through connector 254 and the associated power lines of thehealthcare facility. In addition, data may be communicated between thecircuitry of module 34 and the computer network of the healthcarefacility through connector 254 and associated data lines. If theelectrical control system of bed 232 is coupled to the computer networkof the healthcare facility, then one or more of the user inputs 126, 131of bed 232 maybe used to enter operating parameters into module 34,which operating parameters are communicated to module 34 from bed 232through the computer network of the healthcare facility. In addition,data relating to operating parameters and alarm conditions of module 34may be communicated to bed 232 through the computer network of thehealthcare facility to be displayed on the screen 130 of display unit128. Alternatively, a display unit similar to unit 128 and/or a module,similar to module 228, may be provided on headwall unit 200 (orelsewhere) and may be used to communicate operating parameters to module34 and/or to receive for display data relating to the operatingparameters or alarm conditions of module 34.

When module 34 is received in cavity 290 of headwall unit 200 and whensleeve assemblies 36 are coupled to couplers 292 of headwall unit 200,module 34 may be operated to inflate and deflate the sleeves of sleeveassemblies 36 so as to apply compression therapy to one or more of thelimbs of the patient to which the sleeves are coupled while the patientis resting in bed 232. The battery of module 34 may be recharged whilemodule 34 is coupled to headwall unit 200. When the patient resting onbed 232 needs to exit bed 232, module 34 and sleeve assemblies 36 aredecoupled from unit 200 and then sleeve assemblies 36 are coupleddirectly to the pneumatic couplers of module 34 so that compressiontherapy can continue while the patient is away from bed 232. The batteryof module 34 provides power to the circuitry of module 34 to inflate anddeflate the sleeves of sleeve assemblies 36 while the patient is out ofbed 232.

In alternative embodiments, pressurized gas from a separate or externalgas source of the medical gas system of the healthcare facility may beused to inflate the sleeves of sleeve assemblies 36 when sleeveassemblies are coupled to couplers 292 associated with unit 200. In suchalternative embodiments, module 34 may have an additional pneumaticcoupler that mates with an associated pneumatic coupler in cavity 290 toreceive the pressurized gas from the separate gas source when module 34is received in cavity 290. Also in such embodiments, the pneumaticcircuitry and electrical circuitry of module 34 is operable to controlthe flow of pressurized gas from the external gas source to the sleeveassemblies 36. By using pressurized gas from the external gas sourcewhen module 34 is received in cavity 290, the usage of the internal oron-board pressure generator (i.e., pump or compressor) of module 34 isconserved thereby prolonging the useful life of the pressure generatorof module 34.

An alternative compression module 234, shown in FIG. 8, may be usedeither with a first patient support apparatus or mattress 242, shown inFIG. 6, to form a compression therapy system 260, or with a secondpatient support apparatus or mattress 272, shown in FIG. 7, to form acompression therapy system 270. Mattresses 242, 272 may be used on anyof beds 32, 132, 232 in lieu of mattress 42 or may be used on any othertype of person support device, such as a stretcher, surgical table, cot,bedframe, etc. Mattresses 242, 272 each have a head end 236, a foot end238 spaced longitudinally from head end 236, and a pair of sides 240extending longitudinally between ends 236, 238.

Each mattress 242, 272 comprises a core 244 and a coverlet 246 having aninterior region in which core 244 is situated. Each mattress 242, 272also has a module-receiving cavity 280 formed in core 244. Illustrativemodule 234 is shaped like an elongated box and cavities 280 ofmattresses 242, 272 are similarly shaped. In system 260, the longdimension of cavity 280 of mattress 242 is parallel with long dimensionof mattress 242. In system 270, the long dimension of cavity 280 ofmattress 272 is orthogonal to the long dimension of mattress 272.Illustrative cavities 280 are situated adjacent head end 236 ofmattresses 242, 272 near one of the head end corners thereof to minimizethe chance that a person resting on mattress 242 or mattress 272 feelsmodule 234 through core 244. However, it is within the scope of thisdisclosure for cavities 280 to be situated anywhere in mattresses 242,272.

Core 244 comprises one or more support elements, such as foam elements,air bladders, gel layers, springs, and the like. All types of supportelements used in mattresses are contemplated by this disclosure.Coverlet 246 comprises a top sheet or panel 282, a bottom sheet or panel(not shown), a pair of side sheets or panels 284, and a pair of endsheets or panels 286 as shown in FIGS. 6 and 7. Panels 282, 284, 286,and the bottom panel of coverlet 246 may be fastened together, such asby sewing, adhesive, or RF welding, for example, to form a one-piececoverlet. In such embodiments an opening may be provided somewhere oncoverlet 246, perhaps on panel 286 at the foot end 238 of mattresses242, 272, through which core 244 may be accessed. Closure members, suchas zippers, snaps, or one or more flaps with hook and loop fastenerelements may be provided on coverlet 246 for opening and closing such anopening. In alternative embodiments, coverlet 246 may be a multi-piececoverlet having separate sections that are coupleable together withcouplers, such as zippers, snaps, or hook and loop fastener elements.

Coverlet 246 of each mattress 242, 272 has an opening through whichcavity 280 of the associated core 244 is accessed. Specifically, thisopening is provided in the head end panel 286 of coverlet 246 ofmattress 242 and is provided in one of the side panels 284 of coverlet246 of mattress 272. Each mattress 242, 272 has a liner member 288 thatlines the associated cavity 280 and that has a space shaped to module234. Liner member 288 is made of a fairly rigid material, such as metalor plastic, to prevent cavities 280 of mattresses 242, 272 fromdeforming or collapsing when a person is resting on respectivemattresses 242, 272. Thus, liner member 288 ensures that module 234 isinsertable into and removable from cavity 280 regardless of whether ornot a person is resting on either of mattresses 242, 272.Illustratively, portions of core 244 surround the top, bottom, sides,and one of the ends of liner member 288.

Liner member 288 of each mattress 242, 272 has a box-like, first portion294 that lines the respective cavity 280 and a second portion 296 thatcouples to the associated coverlet 246 as shown in FIGS. 6 and 7.Illustratively, second portion 296 comprises a flange (sometimesreferred to herein as “flange 296”) that couples to coverlet 246adjacent the opening in coverlet 246 through which cavity 280 isaccessed. Flange 296 is square-shaped and extends perpendicularlyoutwardly from the top, bottom, and side walls of portion 294. Thus,portions of coverlet 246 are situated between flange 296 and core 244.Flange 296 may be coupled to coverlet 246 by any suitable fastener, suchas adhesive, snaps, RF welding, clips, tabs, or the like. In someembodiments, mattresses 242, 272 have liner members 288 that areremovable from the associated cavities 280 and that can be replaced withone or more filler elements (not shown), such as a foam element, an airbladder, etc., that fills cavities 280 when the patient resting oneither of mattresses 242, 272 does not need compression therapy.

A coupler 262 having a set of pneumatic ports is formed in or isotherwise coupled to the end wall of portion 294 of liner member 288 inthe interior region of core 244 of each of mattresses 242, 272. Eachmattress 242, 272 comprises a pair of conduits 264, which, in turn, eachhas one or more tubes 266 and a conduit coupler 268 having a set ofpneumatic ports. Tubes 266 are routed through the interior region ofcoverlet 246 between coupler 262 and respective couplers 268 which aresituated outside the interior region of coverlet 246. Illustratively,couplers 262 are coupled to side panels 284 of coverlet 246 closer tothe foot end 238 of respective mattresses 242, 272 than to the head end236 thereof. In alternative embodiments, couplers 262 are coupled toother portions of coverlet 246 or are detached from coverlet altogetherand are coupled only to ends of tubes 266 outside of the interior regionof coverlet 246.

Tubes 266 may be routed between various elements that comprise cores 244of mattresses 242, 272, through tunnels or channels or other passagewaysformed in the various elements that comprise cores 244 of mattresses242, 272, and/or between cores 244 and portions of the associatedcoverlets 246. In some embodiments, tubes 266 may have support members,such as metal coils, rigid collars, or rigid sheaths, that are embeddedtherein, formed thereon, or otherwise associated therewith. Thesesupport members may serve to inhibit tubes 266 from kinking orcollapsing due to the weight of a person resting on mattresses 242, 272or due to articulation of mattresses 242, 272 along with the underlyingbedframe.

Module 234 has a main housing 274, a handle 276 coupled to one end ofhousing 274, and a pneumatic coupler 278 extending from an opposite endof housing 274 as shown in FIG. 8. Illustrative housing 274 isbox-shaped having a rectangular top wall 273, a pair of rectangular sidewalls 275, a first end wall 277 that is substantially square-shaped, asecond end wall 279 that is substantially square-shaped, and arectangular bottom wall (not shown) that is substantially similar to topwall 273. It is within the scope of this disclosure, however, for module234 to have any suitable shape for receipt in correspondingly shapedcavities of mattresses 242, 272. Pneumatic coupler 278 has a set ofpneumatic ports and, illustratively, is oval in shape. Coupler 278 mayhave any shape so long as coupler 262 is correspondingly shaped topermit couplers 278, 262 to mate together.

In the illustrative embodiment, handle 276 is pivotable about an axis281 relative to housing 274 between a use position, shown in FIG. 8, anda storage position (not shown). In some embodiments, wall 277 of housing274 has a recess (not shown) that receives handle 276 when handle 276 ispivoted to the storage position so that an edge 283 of handle 281 issubstantially coplanar with the main portion of wall 277. Optionally, aspring or other biasing member may be provided for biasing handle 276toward the storage position. Module 234 is sized so that, when insertedfully into cavity 280 of either mattress 242, 272, coupler 278 matesautomatically with coupler 262. In some embodiments, wall 279 of housingmay abut the back wall of liner member 288 and wall 277 may besubstantially coplanar with flange 296 when module 234 is inserted fullyinto cavity 280.

One or more retention mechanisms (not shown), such as latches,retractable pins, clips, detents, straps, bands, arms, doors, or thelike, may be provided to retain module 234 in cavity 280 of respectivemattresses 242, 272. In some embodiments, a retractable lock member,such as a pin or a lug, extends from housing 274 into an aperture formedin each liner member 288 to lock module 234 in the respective cavity 280of mattresses 242, 272. In such embodiments, movement of handle 276about axis 281 from the storage position to the use position may betransferred via a suitable mechanism, such as a cable or other type oflinkage, to retract the lock member from the aperture of liner member288 thereby unlocking module 234 for removal from the respective cavity280. A spring or other type of biasing element may be provided to biasthe lock member to its extended position relative to housing 274.

Housing 274 carries electrical circuitry, including a power source, andpneumatic circuitry, including a pressure generator. Thus, when module234 is received in cavity 280 of either mattress 242, 272 and whensleeve assemblies 36 are coupled to couplers 262 of the associatedmattress 242, 272, module 234 may be operated to inflate and deflate thesleeves of sleeve assemblies 36 so as to apply compression therapy toone or more of the limbs of the patient to which the sleeves are coupledwhile the patient is resting on the associated mattress 242, 272. Insome embodiments, user inputs and/or a display may be provided on wall277 of module 234 to allow a user to enter operating parameters intomodule 234 and/or to view operating or alarm data. In other embodiments,module 234 is pre-programmed with a permanent set of operatingparameters.

Referring now to FIGS. 9 and 10, an alternative hospital bed 332 withwhich module 234 may be used to form yet another compression therapysystem 330 according to this disclosure, has a patient-support deck 340with a pivotable deck section 341. Illustratively, deck section 341supports a head portion of mattress 42. Bed 332 is similar to bed 32 andbed 132 and therefore, like reference numerals are used to denoteportions of bed 332 that are substantially the same as like portions ofbed 32 and bed 132. Deck 340 of bed 332 is movable into a chairconfiguration as shown in FIG. 9.

Deck section 341 has a plurality of module-receiving cavities 390 atleast one of which is configured to receive compression module 234 asshown in FIG. 10. A set of partition walls or plates 342 are providedbetween adjacent cavities 390. Other types of modules, such as thoseshown and described in U.S. Pat. Nos. 6,119,291; 6,047,424; and5,630,238; which are hereby incorporated by reference herein, may beinserted into associated cavities 290 to perform other therapies orfunctions, such as percussion and vibration therapy, rotation therapy,inflation of a low airloss mattress, fluidization of a mattress havingfluidizable media, etc.

Section 341 of deck 340 has a set of back walls 344 which have pneumaticand/or electrical couplers 346 mounted thereto or otherwise associatedtherewith as shown in FIG. 10. When module 234 is inserted fully intothe associated cavity 390 of deck 340, coupler 278 of module 234 matesautomatically with the respective coupler 346. In addition, wall 279 ofmodule 234 may abut the associated wall 344 of deck 340 when module 234is inserted fully into the respective cavity 390. In the illustrativeembodiment, section 341 of deck 340 has a set of bottom walls 348 whichhave lock-receiving bosses 350 formed therein. Alternatively, separatelock-receiving bosses may be coupled to or otherwise supported withrespect to bottom walls 348.

Bosses 350 have apertures or pockets that receive lock members whichextend from the modules, such as module 234, that are inserted into theassociated cavities 390. Receipt of the lock members in the apertures orpockets of bosses 350 retains the modules in cavities 390. As mentionedabove, module 234 may have a suitable mechanism to move the associatedlock member from the extended position to a retracted position inresponse to movement of handle 276 from the storage position to the useposition. In alternative embodiments, module 234 may have an aperture orpocket and deck may have a lock member that retains module 234 in theassociated cavity 390. In the illustrative embodiment, a door 352 isprovided to further retain the modules, such as module 234, in theassociated cavities 390. Door 352 is a unitary structure that moves toblock or allow access simultaneously to all of cavities 390 and themodules therein. In some alternative embodiments, door 352 is omitted.In still other alternative embodiments, a set of smaller doors areprovided and are associated with individual cavities 390. A set ofwindows 354 are provided in door 352 for viewing portions of the modulesreceived in cavities 390. Door 352 is hinged to section 341 of deck 340along the bottom edge and a suitable biasing member, such as a torsionspring, is provided to bias door 352 from the opened position, shown inFIG. 10, toward the closed position, shown in FIG. 9.

Bed 332 has a set of conduits (not shown) that are routed from thecoupler 346 associated with module 234 to one or more other couplerslocated elsewhere on bed 332. Such other couplers may be locatedanywhere on bed 332, such as on the footboard 146, siderails 44, othersections of deck 340, frame 38, base 41, and/or mattress 42. Sleeveassemblies 36 are coupleable to these couplers and module 234 isoperable to inflate and deflate the sleeves of sleeve assemblies toapply compression therapy to the patient to which the sleeves arecoupled. In some embodiments, module 234 receives power from and/orcommunicates with the electrical system of bed 332 and can be programmedwith the user controls of bed 332 as described above in connection withbeds 32, 132.

In accordance with this disclosure, therefore, a compression therapysystem 1030 comprises a compression module 1034 which is coupleable to aconduit 1010 that is routed through a portion of a patient-supportapparatus 1032 and is also coupleable to a conduit 1054 of a compressionsleeve assembly 1036 as shown diagrammatically in FIG. 11. Assembly 1036is selectively coupleable to patient-support apparatus 1032 and tomodule 1036. Module 1034 has a pneumatic coupler 1012 with one or moreoutlet ports that mate with associated inlet ports of a first pneumaticcoupler 1014 of patient-support apparatus 1032. Assembly 1036 has apneumatic coupler 1016 with one or more inlet ports that mate withassociated outlet ports of a second pneumatic coupler 1018 of apparatus1032. Apparatus 1032 may be a bed, a stretcher, a surgical table, achair, or the like, or a portion thereof, such as a mattress or asupport pad.

Module 1034 has an electric circuit 1020, a battery 1022, and a pressuregenerator 1024 as shown diagrammatically in FIG. 11. Pressure generator1024 may comprise, for example, a pump, a compressor, a blower, or anyother device capable of inflating a compression sleeve. Battery 1022supplies power via suitable electrical conductors to circuit 1020 and topressure generator 1024. The term “battery” as used herein is intendedto cover all types of electrical power storage devices including, forexample, a single battery cell, a plurality of battery cells, a batterypack, and one or more capacitors.

Module 1034 also has one or more valves 1026 which, in some embodiments,are coupled to a manifold. Module 1034 has one or more conduits 1028extending between pressure generator and 1024 either valve(s) 1026 orthe manifold to which valve(s) 1026 are coupled. In addition, module1034 has one or more conduits 1038 that extend between the port(s) ofcoupler 1012 and either valve(s) 1026 or the manifold to which valve(s)1026 are coupled. Illustratively, one or more pressure sensors 1040 ofmodule 1034 are exposed to the pressure in conduit(s) 1038 and arecoupled via suitable electrical conductors to circuit 1020. One or morevent conduits 1042 are coupled either to valve(s) 1026 or to themanifold to which valve(s) 1026 are coupled.

When module 1034 is detached from apparatus 1032 and coupler 1016 ofsleeve assembly 1036 is coupled to coupler 1012 of module 1034, circuit1020 sends control signals to pressure generator 1024 and to valve 1026to control the inflation and deflation of a compression sleeve 1052which is coupled to a person's limb. For example, during an inflationcycle, circuit 1020 signals valve 1026 to move to an inflation positionhaving conduit 1028 in fluid communication with conduit 1038, which isin fluid communication with conduit 1054 through couplers 1012, 1016.Valve 1026 is configured so that, when valve 1026 is in the inflationposition, conduit 1042 is blocked from fluid communication with conduits1028, 1038.

After valve 1026 moves to the inflation position, circuit 1020 activatespressure generator 1024 to inflate sleeve 1052 through valve 1026,conduits 1028, 1038, 1054, and couplers 1012, 1016. Sensor 1040 providesfeedback to circuit 1020 which is indicative of the pressure in conduit1038 which, in turn, correlates to the pressure in sleeve 1052. When thepressure in sleeve 1052 reaches a desired pressure value correspondingto maximum inflation pressure, circuit 1020 deactivates pressuregenerator 1024 and moves valve 1026 either to an inflation-hold positionor a deflation position, depending upon the control algorithm programmedinto circuit 1020. In the inflation-hold position, the pneumaticcommunication between conduit 1038 and conduits 1028, 1042 is blocked byvalve 1026. Thus, sleeve 1052 remains inflated when valve 1026 is movedto the inflation-hold position after inflation of sleeve 1052. In thoseembodiments having an inflation-hold cycle after the inflation cycle,valve 1026 moves to the deflation position after a programmed period oftime. In the deflation position, conduit 1038 is in fluid communicationwith conduit 1042 which, in turn, is in fluid communication with theambient environment. Thus, the pressurized fluid in sleeve 1052 vents tothe ambient environment through conduits 1038, 1042, 1054 and couplers1012, 1016 when valve 1026 is in the deflation position.

Although illustrative module 1034 is shown in FIG. 11 as having only onevalve 1026, a plurality of valves 1026 may be included in module 1034 asmentioned above. In such embodiments having plural valves 1026, conduit1028 may communicate with each of the plurality of valves 1026 throughpassages of an associated manifold. Also in such embodiments havingplural valves 1026, a plurality of conduits 1038 may be provided forinflating an associated plurality of sections or bladders of analternative compression sleeve assembly. Circuit 1020 may be programmedto operate the plurality of valves and to activate/deactivate pressuregenerator 1024 according to any desired control algorithm, including asequential inflation algorithm in which blood flow is promoted in adirection toward a person's torso.

When module 1034 is coupled to apparatus 1032 such that coupler 1012 iscoupled to coupler 1014 and when sleeve assembly 1036 is coupled toapparatus 1032 such that coupler 1016 is coupled to coupler 1018,circuit 1020 signals valve 1026 and activates/deactivates pressuregenerator 1024 in substantially the same manner as described above toinflate and deflate sleeve 1052 of assembly 1036. However, pressurizedfluid moves through conduit 1010 of apparatus 1032 during inflation anddeflation of sleeve 1052 in addition to the other conduits of system1030. The direction of movement of pressurized fluid through conduit1010 is dependent upon whether sleeve 1052 is being inflated ordeflated. In those embodiments having a plurality of valves 1026 forcontrolling inflation/deflation of a plurality of bladders or sectionsof a sleeve assembly, apparatus 1032 comprises a plurality of conduits1010 routed therethrough.

Due to the added volume of conduit 1010, the time to inflate sleeve 1052may increase when sleeve is inflated through conduit 1010. To compensatefor the added volume of conduit 1010, some embodiments of module 1034may have a dual speed or multi-speed pressure generator that operates ata higher speed to increase the volume flow rate of pressurized fluidwhen sleeve is inflated through conduit 1010. In such embodiments, asuitable sensor may be provided, such as in coupler 1012, for example,to provide a mode signal to circuit 1020 which indicates whether coupler1012 has coupler 1016 of sleeve assembly 1036 coupled thereto or whethercoupler 1012 has coupler 1014 of apparatus 1032 coupled thereto. Thespeed of pressure generator 1024 is then adjusted or selectedaccordingly by circuit 1020 based on the mode signal. In otherembodiments, a user may input an inflation time parameter into circuit1020 and circuit 1020 will adjust the operation of pressure generator1024 to achieve the desired inflation time that is input by the user.

A compression therapy system 1130, which is similar to system 1030,comprises a bed 1132, a compression module 1134, a compression sleeveassembly 1136, and an additional conduit 1137 as shown diagrammaticallyin FIG. 12. Portions of system 1130 which are substantially the same aslike portions of system 1030 are denoted with like reference numerals.One difference between system 1130 and system 1030 is the inclusion ofadditional conduit 1137 in system 1130. Conduit 1137 has a first coupler1112 that is coupleable to coupler 1012 of module 1134 and a secondcoupler 1116 that is coupleable to coupler 1016 of compression sleeveassembly 1136. Conduit 1054 of illustrative assembly 1136 is shorterthan conduit 1054 of assembly 1036. Although conduit 1137 is illustratedas a single conduit through which sleeve 1052 is inflated and deflated,it is within the scope of this disclosure for a plurality of conduits1137 to be provided in system 1130 for inflating and deflating aplurality of sleeves or a plurality of different sections of a sleeve.In such embodiments, the plurality of conduits 1137 maybe coupledtogether to form a ribbon of conduits and, furthermore, multi-portcouplers may be provided at the ends of such a ribbon for coupling toappropriately configured couplers 1012, 1016.

The volume of the internal flow passage of conduit 1137 may besubstantially equivalent to the volume of the internal flow passage ofconduit 1010 which is routed through bed 1132. In such an embodiment,when pressure generator 1024 operates at a particular speed to produce aparticular volume flow rate of pressurized fluid, compression sleeve1052 will generally inflate to a target pressure within a particularperiod of time regardless of whether module 1134 operates to inflatesleeve 1052 through conduit 1010 of bed 1132 or through conduit 1137.Thus, a single speed pressure generator 1024 may be acceptable for usein some embodiments of module 1134 to achieve desired inflation ofsleeve 1052. Of course, a pressure generator 1024 having a controllablespeed may be provided in module 1134, if desired.

Another difference between system 1130 and system 1030 is that module1134 of system 1130 has an electrical coupler 1050 and bed 1132 has anelectrical coupler 1058 that mates with coupler 1050 when module 1134 iscoupled to bed 1132. Coupler 1050 is coupled via suitable electricalconductors to circuit 1020 of module 1134 and coupler 1058 is coupledvia suitable electrical conductors to an electrical control system 1056of bed 1132. Bed 1132 also has a power coupler 1060 configured to coupleto external power source 1062 and a network coupler 1064 configured tocouple to a network 1066 of computer devices. Coupler 1060 is coupled tothe electrical control system 1056 of bed 1132 via suitable electricalconductors and coupler 1064 is also coupled to the electrical controlsystem 1056 of bed 1132 via suitable electrical conductors.

When module 1134 is coupled to bed 1132, power for operating circuit1020 and pressure generator 1024 may be provided from external powersource 1062 through the electrical control system 1056 of bed 1132. Inaddition, the power from external power source 1062 may be used torecharge battery 1022 of module 1134 when module 1134 is coupled to bed1132. Furthermore, data may be communicated between network 1066, theelectrical control system 1056 of bed 1132, and electric circuit 1020 ofmodule 1134 when module 1134 is coupled to bed 1132. Such data mayinclude various operating parameters and alarm conditions of module 1134and/or bed 1132.

Yet another compression therapy system 1230, which has features that aresimilar to features of systems 1030, 1130, comprises sleeve assembly1036, bed 1132, and an alternative compression module 1234 as showndiagrammatically in FIG. 13. Portions of system 1230 which aresubstantially the same as like portions of systems 1030, 1130 aredenoted with like reference numerals. The main difference between system1230 and systems 1030, 1130 is that module 1234 does not have a pressuregenerator, but rather, pressurized fluid is provided to module 1234 froman external pressure source 1240. Such a pressure source 1240 mayinclude, for example, a separate pump or compressor situated in aportable housing that is located nearby module 1234 or that detachablymounts to module 1234 to be transported therewith. Such a pressuresource 1240 may also include, for example, a medical gas system of ahealthcare facility having remote source equipment, such as one or morepump units or compressor units located in a maintenance room, and aseries of pipes or other types of conduits that are routed from thesource equipment to various gas outlets located throughout thehealthcare facility. Any type of device or equipment capable ofproducing pressurized fluid is considered to be a “pressure source” inaccordance with this disclosure.

Module 1234 has a source coupler 1242 to which is coupled a coupler 1244that is situated at an end of a conduit 1246 extending from externalpressure source 1240 as shown diagrammatically in FIG. 13. Conduit 1246may be, for example, a pneumatic line or hose that extends between a gasoutlet in a hospital room and module 1234. In such an embodiment,another coupler (not shown) may be provided at an end of conduit 1246for coupling to the gas outlet associated with external pressure source1240. In some embodiments, coupler 1244 includes a valve or othersimilar structure that closes an associated flow passage and/or port ofcoupler 1244 when coupler 1244 is decoupled from coupler 1242. Such avalve or similar structure moves to an opened position in response tocoupling of coupler 1244 to coupler 1242 to permit pneumaticcommunication between external pressure source 1240 and an internalconduit 1228 of module 1234. Conduit 1228 extends within module 1234between coupler 1242 and valve 1026.

When external pressure source 1240 is coupled to module 1234, circuit1020 signals valve 1042 to open and close according to a controlalgorithm to inflate compression sleeve 1052 of compression sleeveassembly 1036 either directly, if assembly 1036 is coupled to module1234, or through conduit 1010 of bed 1132, if module 1234 and assembly1036 are coupled to bed 1132. In the illustrative example, circuit 1020of module 1234 may receive power from external power source 1062 andcommunicates with network 1066 through the electrical control system1056 of bed 1132. If module 1234 does not receive power from externalpower source 1062, such as is the case when power source 1062 isdisconnected from bed 1132, then battery 1022 supplies the powernecessary to operate circuit 1020 and associated components of module1234, such as valve 1026 and sensor 1040. Bed 1132 may also have anonboard battery (not shown) to operate the electrical control system1056 and associated components when bed 1132 is disconnected fromexternal power source 1062.

A further compression therapy system 1330 according to this disclosure,which has features similar to systems 1030, 1130, 1230, comprisespatient-support apparatus 1032, compression sleeve assembly 1036, and analternative compression module 1334 as shown diagrammatically in FIG.14. Portions of system 1330 which are substantially the same as likeportions of systems 1030, 1130, 1230 are denoted with like referencenumerals. Although patient-support apparatus 1036 is labeled as “bed” inFIG. 14, other types of patient-supports devices, as mentioned herein,may be included in system 1330.

Module 1334 has its own pressure generator 1024 and also has a coupler1342 that is coupleable to external pressure source 1240. Module 1334further comprises a selector or valve 1326 that is coupled pneumaticallyto coupler 1342 by a conduit 1328 and that is coupled pneumatically tovalve 1026 by a conduit 1338. In addition, module 1334 has a conduit1318 extending from an outlet of pressure generator 1024 to valve 1326.In alternative embodiments, a manually actuated valve is provided inmodule 1334 to serve as a selector in lieu of electrically actuatedvalve 1326. The position of such a manually actuated valve may bedetermined by a handle, knob, lever, or the like that is moved by auser. Alternatively, such a manually actuated valve may be movedmechanically to the appropriate position as a result of externalpressure source 1240 being coupled to coupler 1342 or decoupled fromcoupler 1342.

Valve 1326 of illustrative system 1330 is an electrically actuated valvethat is movable between first, second, and third positions in responseto one or more control signals received by valve 1326 from circuit 1020of module. When valve 1326 is in the first position, pneumaticcommunication between pressure generator 1024 and conduit 1338 isblocked and pneumatic communication between pressure source 1240 andconduit 1338 is blocked. When valve 1326 is in the second position,pressure generator 1024 is in pneumatic communication with conduit 1338and pneumatic communication between pressure source 1240 and conduit1338 is blocked. When valve 1326 is in the third position, pressuresource 1240 is in pneumatic communication with conduit 1338 andpneumatic communication between pressure generator 1024 and conduit 1338is blocked.

When valve 1026 is moved to the inflation position and valve 1326 ismoved to the second position, operation of pressure generator 1024results in the inflation of sleeve 1052 of assembly 1036 eitherdirectly, if assembly 1036 is coupled to module 1334, or through conduit1010 of bed 1032. When valve 1026 is moved to the inflation position andvalve 1326 is moved to the third position, pressure source 1240 suppliespressurized fluid through module 1334 to inflate sleeve 1052 of assembly1036 either directly, if assembly 1036 is coupled to module 1334, orthrough conduit 1010 of bed 1032. Valves 1026, 1326 maybe mounted to acommon manifold such that one or more of conduits 1038, 1042, 1318,1328, 1338, or portions thereof, are provided by passages formed in themanifold.

Module 1334 has an electrical coupler or connector 1360 which isconfigured for coupling to external power 1062 as shown in FIG. 14.Module 1334 also has an electrical coupler or connector 1364 which isconfigured for coupling to network 1066. Couplers 1360, 1364 are coupledvia suitable electrical conductors to electric circuit 1020 of module1334. Thus, unlike modules 1134, 1234 of systems 1130, 1230,respectively, module 1334 communicates directly with network 1066 ratherthan through the electrical control system, if any, of the associatedpatient-support apparatus 1032. In addition, module 1334 receives powerdirectly from external power 1062 instead of through the electricalsystem, if any, of the associated patient-support apparatus.

In the illustrative embodiment of system 1330, module 1334 is coupleableto a headwall unit 1330 as shown diagrammatically in FIG. 14. Headwallunit 1330 may include outlets or connectors (not shown) that provideconnectivity between module 1334 and external power 1062, network 1066,and external pressure source 1240. Although blocks 1062, 1066, 1240 areillustrated diagrammatically as being surrounded by headwall 1330, itshould be understood that the components and systems associated withblocks 1062, 1066, 1240 are not physically located, in their entirety,within headwall 1330, but rather, headwall 1330 provides module 1334with connectivity to these various systems. Although module 1334 ofsystem 1330 is described as being coupleable to headwall 1330 andalthough module 34 is described above as being coupleable to headwallunit 200, it is within the scope of this disclosure for modules 34, 1334(or any of the other compression modules disclosed herein) to becoupleable to other types of architectural structures used in healthcarefacilities. Such architectural structures may include, for example,columns that extend either partially or fully between a floor and aceiling; chases that are mounted to a wall, a ceiling, or some otherstructure; arms that are suspended from a ceiling, a wall, afloor-supported frame, or some other structure; pedestals that aremounted to or otherwise rest upon a floor or some other structure; andcarts, such as stand-alone carts, carts that are dockable to apatient-support apparatus, and carts that are dockable to some otherstructure.

Referring now to FIG. 15, an illustrative supply-storage station 360 hasstorage shelves 362 on which various supplies 364, such as compressionsleeve assemblies 36, 1036, compression modules 34, 234, 1034, 1134,1234, 1334, spare parts for modules 34, 234, 1034, 1134, 1234, 1334,and/or other supplies may be stored, as desired. Station 360 has adevice 366 to which modules 34 are mounted for recharging and/orcommunicating data to and/or from a computer 368 of station 360.Computer 368 may be coupled to the network of the healthcare facility ormay be a stand-alone computer. Electrical conductors 370 extend betweendevice 366 and computer 368. In some embodiments, data is downloadedfrom modules 34 to computer 368 through device 366 and data fromcomputer 368, such as operating software upgrades, is uploaded tomodules 34 through device 366. Illustrative device 366 comprises a boardor substrate 372 and a set of electrical connectors (not shown) that aresupported with respect to board 372 at appropriate locations to matewith the electrical connectors of modules 34. Illustrative device 366 isconfigured to accommodate up to four modules 34. In alternativeembodiments, device 366 may be configured to accommodate more or lessthan four modules 34.

Referring now to FIG. 16, a module-recharging apparatus 380 comprises avertical recharging stick 382 and three module-receiving cradles 384coupled to the front of recharging stick 382. Cradles 384 are configuredto receive and support modules 34 therein. A set of prongs (not shown)extend from the rear of stick 382 and are configured for receipt in astandard electrical plug or receptacle. Suitable conductors, such aswires, extend through the interior region of stick 382 between the setof prongs and respective electrical connectors 386 which are located onassociated bottom walls 388 of cradles 384. AC to DC conversioncircuitry is provided in the interior region of stick 382, in someembodiments, to convert the standard AC power received by the prongs ofapparatus 380 into a predetermined DC voltage for application to modules34 through connectors 386. In other embodiments, each module 34 has itsown AC to DC conversion circuitry receives standard AC power viaconnectors 386.

Illustrative cradles 384 are configured to receive the lower portion ofmodules 34 therein. A front wall 392 of each cradle 384 is formed with acutout 394 through which user inputs 124 of modules 34 are accessiblewhen modules 34 are mounted to cradles 384. Cradles 384 are tiltedslightly forwardly relative to stick 382 such that the front face ofmodules 34 faces slightly toward the floor when modules 34 are situatedtherein. A back wall 396 of each cradle 384 has an upwardly extendinglobe or protrusion 398. The lobes 398 of the two lower cradles 384overlap a small portion of the front walls 392 of the next successivecradles 384 situated thereabove. Wires are routed to the two upperconnectors 386 through spaces provided behind the two lower lobes 398.Stick 382 has an enlarged lower end 400 through which wires are routedto the lower connector 386. Each cradle 384 has a pair of side walls 402extending between the respective front walls 392 and back walls 396.

Although module 34 has been described above as being part of variouscompression therapy systems used primarily in healthcare environments,module 34 and the associated compression therapy systems may be used inother environments as well. For example, compression therapy systemsincluding module 34 and sleeve assemblies 36 may be used to promoteblood flow in the legs of passengers on long flights, train rides, busrides, etc. In addition, truck drivers, taxi drivers, airline pilots,etc. may use such compression therapy systems to promote blood flow intheir legs. Just about any person who wishes to promote blood flow intheir legs may do so in just about any location due to the portabilityof module 34 and sleeve assemblies 36.

In the case of bus drivers, taxi drivers, or anyone else traveling in anautomotive vehicle who wishes to use module 34 to controlinflation/deflation of one or more sleeve assemblies 36 coupled to theirlegs and/or feet, a power cord 410, shown in FIG. 17, that plugs into astandard lighter socket of an automotive vehicle may be used to providepower to module 34. Power cord 410 has a lighter plug 412 at one endthereof and a module plug 414 at the opposite end thereof. Lighter plug412 is configured for receipt in a standard lighter socket to receivepower from the electrical system of the associated automotive vehicle.Module plug 414 is releasably coupleable to the electrical connector ofmodule 34. Use of power cord 410 to provide power to module 34 conservesthe charge of any batteries of module 34. In some embodiments, thebatteries of module 34 are recharged when power cord 410 is used toprovide power to module 34.

Referring now to FIG. 18, an alternative compression module 434, whichis similar to module 34, has a housing 422 with a carrying handle 420molded integrally with a main portion 426 of housing 422. As was thecase with module 34, module 434 has user inputs 124 for providingoperating parameters to the circuitry of module 434 to control theinflation/deflation of the associated compression sleeve assemblies 36.Handle 420 comprises a grippable portion 428 and a pair of connectorportions 430 interconnecting portions 426, 428. Connector portions 430support grippable portion 428 in spaced relation with main portion 426so that a finger-receiving opening 432 is defined between portions 426,428. Opening 432 is sized to receive one or more of a user's fingers.Thus, a user is able to grip handle 420 to carry module 434.

Another alternative compression module 444 has a housing 442 to which aseparate carrying handle 450 is coupled for pivoting movement about anaxis 452 as shown in FIG. 19. Handle 450 comprises a base portion 454, agrippable portion 456, and a pair of connector portions 458interconnecting portions 454, 456. Handle 450 further comprises a pairof pivot flanges 460 extending downwardly from portion 454. Flanges 460are situated alongside the opposite sides of housing 442 of module 444.A set of pivot pins (not shown) or other suitable structure forpermitting handle 450 to pivot relative to housing 442 are provided. Insome embodiments, the pivot structure associated with flanges 460comprises a set of cylindrical or hemispherical projections that arereceived in complimentary shaped pockets or detents formed in housing442. Such projections and detents may be sized to permit handle 450 tosnap onto and off of housing 442. Connector portions 458 supportgrippable portion 456 in spaced relation with base portion 454 so that afinger-receiving opening 448 is defined between portions 454, 456.Opening 448 is sized to receive one or more of a user's fingers. Inalternative embodiments of handle 450, base portion 454 is omitted.

A further alternative compression module 464 has a housing 462 with apair of loop-receiving eyelets 460 molded integrally with a top wall 466of housing 462 as shown in FIG. 20. Each eyelet 460 has a slot oropening through which respective flexible straps 470 may be threaded.Each strap 470 has fastened to the opposite ends thereof suitablecouplers, such as an illustrative loop material patch 472 and a hookmaterial patch 474. After strips 470 are threaded through openings 468of eyelets 460, strips may be routed around other structures, such as aportion of a siderail of a bed, an armrest of a wheel chair, a handle ofa nightstand, a belt worn by a user, etc., and the loop material patch472 may then be fastened to the hook material patch 474 so that straps470 form loops 476 which couple module 464 to the structure. Snaps,clips, or the like may be used as couplers on straps 470 in lieu of theillustrative hook-and-loop material arrangement.

Yet another alternative compression module 484 has a housing 482 with abelt clip 480 molded integrally with a back wall 486 of housing 482 asshown in FIG. 21. In alternative embodiments, belt clip 480 is aseparate piece that is removably attachable to back wall 486 viasuitable coupling mechanisms, such as a tongue-in-groove arrangement,fingers, snaps, tabs, or the like. Illustrative housing 482 has a pairof eyelets 460 formed integrally with a top wall 488 of housing 482.Eyelets 460 of module 484 are substantially identical to eyelets 460 ofmodule 464. In alternative embodiments, eyelets 460 are omitted frommodule 484.

Belt clip 480 has a first flange 490 that extends substantiallyhorizontally away from back wall 486 by a small amount and a secondflange 492 that extends downwardly from flange 490 as shown in FIG. 21.Flange 492 has a distal free end 496. Flange 492 is spaced from, butsubstantially parallel with, back wall 486 to define a belt-receivingspace 494 therebetween. Thus, belt clip 480 is configured to permitmodule 484 to be clipped onto a user's belt such that housing 482 issituated on one side of the user's belt, flange 490 extends over the topof the user's belt, and flange 492 is situated on an opposite side ofthe user's belt.

Still another alternative compression module 534 has a housing 510 witha tube clip 520 molded integrally with a back wall 512 of housing 510 asshown in FIG. 22. In alternative embodiments, tube clip 520 is aseparate piece that is removably attachable to back wall 486 viasuitable coupling mechanisms, such as those mentioned above inconnection with belt clip 480. Illustrative housing 510 also has eyelets460 formed integrally with a top wall 514 of housing 510. Eyelets 460 ofmodule 534 are substantially identical to eyelets 460 of module 464. Inalternative embodiments, eyelets 460 are omitted from module 534.

Tube clip 520 is generally serpentine in vertical cross section, havinga curved, first flange 516 that is coupled at its upper end to back wall512 and having a curved, second flange 518 that is appended to the lowerend of flange 516. The outer surface of flange 516 faces away from backwall 512 and is generally convex, whereas the outer surface of flange518 faces away from back wall 512 and is generally concave. Flange 518has a distal free end 522. Flange 516 is spaced from back wall 512 todefine a tube-receiving space 524 therebetween. Thus, tube clip 520 isconfigured to permit module 534 to be clipped onto a tube or othersimilar structural member such that housing 510 is situated on one sideof the tube and such that flange 516 wraps partially around the tubewith a friction fit engagement. For example, tube clip 520 may be usedto mount module 534 to a horizontal portion 526 of an armrest 528 of awheelchair 530 to be transported therewith as shown in FIG. 24. Asanother example, clip 520 may be used to mount module 534 to ahorizontal tube 536 of a walker 538 to be transported therewith as shownin FIG. 25. Clip 520 may also be used to mount module 534 to otherstructural members of all sorts of other devices, including a siderailof a hospital bed.

Yet a further alternative compression module 544 according to thisdisclosure has a pair of flanges 550 and a knob 552 that are configuredto couple the compression module 544 to a vertically extending tube orpole 540, such as an IV pole 540 that extends upwardly from a base 541of a wheeled IV stand 543 as shown in FIGS. 23 and 26. Flanges 550 andknob 552 may also be used to mount module 544 to any of the variousvertical frame members 542 of wheelchair 530, shown in FIG. 24, or toany of the various portions of legs 548 of walker 538, shown in FIG. 25,including inclined portions 546 of legs 548.

Flanges 550 extend away from a back wall 554 of a housing 556 of module554 as shown in FIG. 23. Optionally, a top wall 558 of housing 556 haseyelets 460 molded integrally therewith. One of illustrative flanges 550is a V-shaped flange 560 and the other of flanges 550 is a straightflange 562. The spacing between an outer vertical edge 564 of flange 560and an outer vertical edge 566 of flange 562 is large enough to permittube 540 to pass therebetween. Knob 552 has a threaded shaft 568 thatthreads through a threaded aperture 570 formed in flange 562. When pole540 is located between flanges 560, 562, knob 552 may be tightened sothat pole 540 is clamped between an end 572 of threaded shaft 568 andthe segments of flange 560 forming the V-shape with enough force to holemodule 544 in place relative to pole 540. Of course, knob 562 may beloosened to permit decoupling of module 544 from pole 540.

Referring now to FIGS. 27-29, a variety of module-carrying garments areconfigured to be worn by a person and are configured to carry acompression module, such as any of those described above. One suchgarment comprises a shoulder harness 580 having a set of straps 582 anda pouch 584 coupled to straps 582 as shown in FIG. 27. Straps 582 areconfigured so that pouch 584 is located at the person's side between oneof the person's arm pits and hips. Harness 580 has a top flap 586 whichis moved to open and close an open top (not shown) of pouch 584.Suitable closure mechanisms, such as zippers, hook-and-loop patches,snaps, and the like, may be provided at the interface between flap 586and pouch 584. Pouch 584 is sized and configured to receive acompression module therein. In addition, a bottom panel (not shown) ofpouch 584 has one or more openings through which one or more conduits588 may extend. The one or more openings in the bottom panel of pouch584 are small enough, however, to prevent the entire compression modulefrom falling therethrough. Pressurized fluid is communicated throughconduits 588 between the module carried in pouch 584 and the compressionsleeve(s) coupled to the person's limb(s).

Another garment for carrying a compression module comprises a fanny pack590 having a belt 592 that extends around a person's waist and a pouch594 coupled to the belt 592 as shown in FIG. 27. Pouch 594 is sized andconfigured to receive a compression module therein. Although the personin FIG. 27 is illustrated as wearing both a harness 580 and a fanny pack590, it should be appreciated that, if desired, only one of harness 580and fanny pack 590 may be worn without wearing the other. A zipper 596is coupled to pouch 594 for opening and closing a slot (not shown) ofpouch 594 through which compression modules may be inserted into orremoved from pouch 594. A bottom panel (not shown) of pouch 584 has oneor more openings through which one or more conduits 598 may extend. Theone or more openings in the bottom panel of pouch 594 are small enough,however, to prevent the entire compression module from fallingtherethrough. Pressurized fluid is communicated through conduits 598between the module carried in pouch 594 and the compression sleeve(s)coupled to the person's limb(s).

A further garment according to this disclosure comprises a vest 600having a pocket 610 in which a compression module is carried. In theillustrative embodiment, pocket 610 is situated on a back portion 612 ofvest 600. In other embodiments, pocket 612 is situated on one of theside portions 614 or on a front portion (not shown) of vest 600. Pocket610 includes a lower, main portion 616 and a flap 618 that is moved toopen and close an open top (not shown) of main portion 616. Compressionmodules are insertable into and removable from portion 616 of pocket 610when flap 618 is in an opened position. Suitable closure members, suchas an illustrative snap 620, is provided to maintain flap 618 in theclosed position to retain the compression module in pocket 610. A bottompanel (not shown) of main portion 616 of pocket 610 has one or moreopenings through which one or more conduits 622 may extend. The one ormore openings in the bottom panel of main portion 616 are small enough,however, to prevent the entire compression module from fallingtherethrough. Pressurized fluid is communicated through conduits 622between the module carried in pocket 610 and the compression sleeve(s)coupled to the person's limb(s).

A compression sleeve 630, which is configured to couple to a person'scalf, has a main sleeve portion 632 and a pocket in which a compressionmodule for inflating the compression sleeve is carried. Sleeve 630 wrapsaround the person's calf and has one or more inflatable bladders orchambers that inflate to promote blood flow. In some embodiments, sleeve630 is configured as a tube that slips onto the person's leg. In otherembodiments, sleeve 630 has one or more flaps or straps that releasablyattach to other portions of the sleeve 630 via suitable couplers, suchas hook-and-loop fasteners, snaps, or the like. Alternative sleeveswhich couple to other portions of a person's limbs, such as sleeves fora person's arms, combination thigh and calf sleeves, combination calfand foot sleeves, sleeves that cover substantially all of a person'sleg, and foot sleeves, may have a pocket for carrying a compressionmodule in accordance with this disclosure.

Pocket 634 includes a lower, main portion 636 and a flap 638 that ismoved to open and close an open top (not shown) of main portion 636.Compression modules are insertable into and removable from portion 636of pocket 634 when flap 638 is in an opened position. Suitable closuremembers, such as hook-and-loop patches, are provided to maintain flap638 in the closed position to retain the compression module in pocket634. A bottom panel (not shown) of main portion 636 of pocket 634 hasone or more openings through which one or more conduits 640 may extend.The one or more openings in the bottom panel of main portion 636 aresmall enough, however, to prevent the entire compression module fromfalling therethrough. In the illustrative embodiment, two conduits 640are shown extending from pocket 634, which implies that sleeve 630 hastwo inflatable chambers. These two conduits 640 extend through a slit642 formed in an outer layer of portion 632 of sleeve 630 and are routedthrough portion 632 to respective chambers of sleeve 630. In alternativeembodiments, all portions of conduits 640 are located on the outside ofmain portion 632 and communicate with respective chambers of sleeve 630through ports that extend from the external surface of the outer layerof main portion 632.

Pressurized fluid is communicated through conduits 640 between themodule carried in pocket 634 and the chambers of main portion 632. Thecompression modules used with sleeve 630 are smaller in size than othercompression modules disclosed herein. Due to the shorter length ofconduits 640, as compared to the conduits of other compression therapysystems described herein, a smaller capacity pressure generator may beused in the compression modules configured for receipt in pocket 634. Inaddition, less valves are needed in the compression modules used withsleeve 630 due to the fact the compression module is dedicated forinflating/deflating only compression sleeve 630 rather than pairs of avariety of different sleeves. In the illustrative embodiment, pocket 634is situated on main sleeve portion 632 closer to a top edge 644 thereofthan to a bottom edge 646 thereof.

Although the invention has been described in detail with reference tocertain illustrative embodiments, variations and modifications existwith the scope and spirit of this disclosure as described and defined inthe following claims.

1. A system for applying compression therapy to patient's limb, thesystem comprising a patient-support apparatus having a module-receivingcavity, a compression sleeve adapted to couple to the patient's limb,the sleeve being inflatable to compress the patient's limb, a conduitthrough which the sleeve is inflated, and a compression module removablyattachable to the patient-support apparatus and operable to inflate thesleeve through the conduit, at least a portion of the compression modulebeing recieived in the module-receiving cavity when the compressionmodule is attached to the patient-support apparatus.
 2. The system ofclaim 1, wherein the patient-support apparatus comprises a bed.
 3. Thesystem of claim 2, wherein the bed comprises a siderail and themodule-receiving cavity is formed in the siderail.
 4. The system ofclaim 3, wherein the siderail has an interior region and a portion ofthe conduit is situated in the interior region of the siderail.
 5. Thesystem of claim 2, wherein the bed comprises a footboard and themodule-receiving cavity is formed in the footboard.
 6. The system ofclaim 5, wherein the footboard has an interior region and a portion ofthe conduit is situated in the interior region of the footboard.
 7. Thesystem of claim 2, wherein the bed comprises a mattress and themodule-receiving cavity is formed in the mattress.
 8. The system ofclaim 7, wherein the mattress has an interior region and a portion ofthe conduit is situated in the interior region of the mattress.
 9. Thesystem of claim 2, wherein the bed comprises a patient-support deck andthe module-receiving cavity is formed in the patient-support deck. 10.The system of claim 9, wherein the patient-support deck has an interiorregion and a portion of the conduit is situated in the interior regionof the patient-support deck.
 11. The system of claim 9, wherein thepatient-support deck has a first deck section and a second deck section,the first deck section is movable with respect to the second decksection, and the module-receiving cavity is formed in the first decksection.
 12. The system of claim 1, wherein the patient-supportapparatus has an inlet port, the compression module has an outlet port,the inlet port is coupled to the conduit, and the outlet port couplesautomatically to the inlet port when the compression module is insertedinto the module-receiving cavity.
 13. The system of claim 1, wherein thecompression module comprises an electric circuit and a pressuregenerator, the patient-support apparatus comprises an electrical system,and the electrical system of the patient-support apparatus communicateswith the electric circuit of the compression module when the compressionmodule is coupled to the patient-support apparatus.
 14. The system ofclaim 13, wherein the compression module has a first electricalconnector, the patient-support apparatus has a second electricalconnector, and the first electrical connector mates automatically withthe second electrical connector when the compression module is insertedinto the module-receiving cavity.
 15. The system of claim 13, whereinthe electrical system comprises a user input device configured toreceive user inputs to command the operation of the compression moduleand the user input device is spaced from the module-receiving cavity.16. The system of claim 13, wherein the pressure generator comprises apump.
 17. The system of claim 13, wherein the pressure generatorcomprises a compressor.
 18. The system of claim 1, wherein thecompression module is adapted to receive pressurized fluid from anexternal source of pressurized fluid and the compression modulecomprises a first valve having an opened position allowing pressurizedfluid to flow through the conduit to inflate the compression sleeve anda closed position blocking the flow of pressurized fluid into theconduit.
 19. The system of claim 1, wherein the patient-supportapparatus comprises a mattress.
 20. The system of claim 19, wherein themattress comprises a core and a coverlet having an interior region inwhich the core is situated, the module-receiving cavity is formed in thecore, and the coverlet has an opening through which the module-receivingcavity is accessed.
 21. The system of claim 20, wherein the conduit isrouted at least partially through the interior region of the coverletand the conduit has a portion situated outside the interior region thatis adapted to couple to the compression sleeve.
 22. The mattress ofclaim 21, wherein the portion of the conduit that is adapted to coupleto the compression sleeve comprises a connection port.
 23. The mattressof claim 22, wherein the connection port is coupled to the coverlet. 24.The mattress of claim 23, wherein the coverlet has a top panel, a bottompanel, and a side panel extending between the top and bottom panels, andthe connection port is coupled to the side panel.
 25. The mattress ofclaim 23, wherein the coverlet and core have a head end, a foot end, anda pair of sides extending between the head and foot ends, themodule-receiving cavity is closer to the head end than to the foot end,and the connection port is closer to the foot end than to the head end.26. The mattress of claim 20, further comprising a liner member having afirst portion that lines the module-receiving cavity and having a secondportion coupled to the coverlet.
 27. The mattress of claim 26, whereinthe first portion of the liner member has a space configured to receiveat least a portion of the compression module therein.
 28. The mattressof claim 26, wherein the second portion comprises a flange that couplesto the coverlet adjacent the opening. 29-104. (canceled)